5 ms·
One of the most important papers in this field is [0]. (As is common in science, it built on a long history of nearby ideas, e.g. [1].) An important calculation
by zachf 4y ago
One of the most important papers in this field is [0]. (As is common in science, it built on a long history of nearby ideas, e.g. [1].) An important calculation done around this idea is presented in [2], in which remarkable progress is made on Hawking's black hole information paradox. All of these papers have some amount of mathematical backing, but you'll find plenty of formulas and calculations in [2]!
[0] https://arxiv.org/abs/1306.0533 https://arxiv.org/abs/1306.0533
[1] https://arxiv.org/abs/1005.3035 https://arxiv.org/abs/1005.3035
[2] https://arxiv.org/abs/1908.10996 https://arxiv.org/abs/1908.10996
- thriftwy 4y ago> General relativity contains solutions in which two distant black holes are connected I can see these as artifacts of insisting to work in 3D coordinates and dealing with artifacts of projection where it breaks down, instead of working in honest 4D coordinates where formulas are much simpler and everything is smooth. How would two connected black holes look like in Kruskal–Szekeres coordinates? Where's the firewall in case of Kruskal–Szekeres coordinates? Where's the firewall at all if the event horizon seemingly moves away from you as you approach the wormhole?
- deleted 4y ago[deleted]
- zachf 4y agoThe existence of those solutions is independent of a choice of coordinates. (Nothing in GR is ever allowed to depend on coordinates, in the end!) The existence of the second asymptotic region is easiest to see from the Penrose diagram of the Schwarzschild black hole. A derivation of this that uses Kruskal coordinates is in [0], see Figure 3.3 for the result. [0] https://scholar.harvard.edu/files/yshi/files/physics_211r_-_black_holes_final.pdf https://scholar.harvard.edu/files/yshi/files/physics_211r_-_...
- thriftwy 4y agoThank you for this insightful link. I'm still not sure why one would need to explain that (such as an "ERP pair") instead of just the topology of space being what it is in this specific case. As far as I know these models fail to produce any interesting prediction and even explain all the known facts in their terms. One would need to find out which stellar evolution paths would lead to black holes being linked by a wormhole. This assumes no magic happening beyond the event horizon and the evolution of matter inside it following already known laws.